Hardware Spec Index

Brontix FN-9921 XT 140mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN9921-XT · Released 2023 · Updated 2026-10-26

Key facts

Benchmark index1,021 (Case Fans scale)
Category rank#9,446
Street price$39
Power3 W
Performance per dollar26.18
Released2023

Specifications

BrandBrontix
ModelBrontix FN-9921 XT
Size140 × 140 × 25 mm
Speed400–1,600 RPM (PWM)
Airflow76.8 CFM
Static pressure1.52 mmH₂O
Noise28 dBA
BearingMagnetic levitation
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-9921 XT 140mm PWM ARGB Case Fan”, https://vextor7.com/item/16715014 (accessed 2026-10-26).